Patent · US Active

Method for operating an internal combustion engine, and internal combustion engine

US11073079B2 · kind B2 · utility

0Cited by

5References

15Claims

0Family size

Assignee

MTU FRIEDRICHSHAFEN GMBH · DE

Inventors

Gunther Schmidt · Biberach, DE
Ralf Speetzen · Friedrichshafen, DE

Key dates

Filing date	Nov 18, 2019
Grant date	Jul 27, 2021
Priority date	—
Expiry date	Nov 18, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for operating an internal combustion engine having an engine with a first number of cylinders and a second number of cylinders and a supercharger arrangement, wherein a charge air flow supplied to the engine is compressed by means of at least one compressor and at least one turbine is acted on by an exhaust gas flow discharged from the engine. In a main operating mode, the engine operates the first number of cylinders in two-stroke operation and the second number of cylinders in four-stroke operation. A scavenging gradient of the engine is greater for the cylinders operated in the two-stroke operation than for the cylinders operated in the four-stroke operation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.